TTU is TRACS accredited. The PhD in Leadership is a 60 hour program, tuition is approximately $24K, and with the exception of one 5-day residency during the first year of the program, the degree can be completed totally online. http://www.tntemple.edu/application/files/Academics/phd/PhD-Overview-and-Guide-Current-8-15-12.pdf
This is a great school. I was actually looking to attend TBS at one time (their seminary) for my DMin degree. Their prices are decent, as well.
I am familiar with this school and have been looking at the PhD for a year or so. I think the tuition is around $18k. The 24k, I believe, includes their estimate of book costs. They claim that they will be applying for RA through SACS in June of 2014, but there have been false starts in the past. We'll see.